卧位和坐位等长运动对女柔道运动员心血管功能的影响

Effect of isometric handgrip exercise with supine and sitting postures on cardiac function in the Jodo sportswomen

目的：探讨不同体位等长运动对女运动员心血管功能的影响。方法：用无创法（阻抗法）测定了34名女柔道运动员心血管功能。结果：与静态卧位相比，除HR、SBP外，坐位时其他指标的差别均显著。在运动状态下，都表现为HR加速（P＜0．001），SBP和DBP升高（P＜0．001）、LVET。延长（P＜0．001）和QS1缩短（P＜0．001）。所不同的是卧位运动时QS2、LVET缩短（P＜0．05，P＜0．01）、IVCT延长（P＜0．01），PEP／LVET不变；而坐位运动时则为PEP缩短（P＜0．001）和PEP／LVET减小（P＜0．01）。结论:不同体位运动时心血管反应特点主要是PEP／LVET、IVCT、PEP和LVET的变化。

Objective: This paper studied the effect of isometric handgrip exercise with dif-ferent p0stures on cardiovascular functions. Methods: The cardiovascular functions were measuredby noninvasive techniques (impedence cardiography). Results: When the values in sitting positionwere compared with that in supine position at rest, except HR and SBP, other cardiovascular func-tion parameters had statistical significance. Both supine and sitting positions exercise, HR was in-creased (P<O. 0O1), SBP and DBP were higher (Pwt0. Ol), LVETc was longer (P<0. OOl), andQS, was shorter (P< O- OOl ). At supine exercise, QS,' LVET were shorter (PwtO. O5, P<O. 0l ), IVCT was 1onger (Pwt0. O1) 1 however sitting exercise PEP was shorter (P<0. OOl) andPEP/LVET was decreased as compare with the values at rest. Conclusi0n:Response characteristicsof isometric handgrip exercise with different postures in Jodo sportswomen are changes of PEP/LVET、IVCT、 PEP and LVET.